Data are (%). Fasting cut-off of ≥5.1 mmol/L; 1 h cut-off of ≥10 mmol/L; 2 h cut-off of ≥8.5 mmol/L. aFasting and/or 1 h and/or 2 h. , , and compared to ID GC-MS (McNemar test for correlated proportions using Bonferroni correction). Missing values were below 4% for all measurements. CL: central laboratory; HC201+: HemoCue 201+; HC201RT: HemoCue 201 RT; ID GC-MS: isotope dilution gas chromatography-mass spectrometry.